Jaws of the Abyss (Japanese: ならくの大口Hell's Mouth) is a playable dungeon the player goes through in Pokémon Mystery Dungeon: Gates to Infinity. It has 29 floors and no boss. This dungeon is accessible after completing the main storyline. This dungeon has a Golden Chamber which contains Thundurus. There are detours on the fourth, 18th, 23rd, and 27th floors that are coated in ghostly fog and require a Blue Key and either a Ghost or Dark-type Pokémon to pass through.